561478275 has 18 divisors (see below), whose sum is σ = 1005670380. Its totient is φ = 299454960.

The previous prime is 561478273. The next prime is 561478283. The reversal of 561478275 is 572874165.

561478275 is a `hidden beast` number, since 5 + 614 + 7 + 8 + 27 + 5 = 666.

It is not a de Polignac number, because 561478275 - 2¹ = 561478273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 561478275.

It is not an unprimeable number, because it can be changed into a prime (561478273) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1247505 + ... + 1247954.

Almost surely, 2^561478275 is an apocalyptic number.

561478275 is a deficient number, since it is larger than the sum of its proper divisors (444192105).

561478275 is a wasteful number, since it uses less digits than its factorization.

561478275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495475 (or 2495467 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 561478275 is about 23695.5328068394. The cubic root of 561478275 is about 824.9817075834.

The spelling of 561478275 in words is "five hundred sixty-one million, four hundred seventy-eight thousand, two hundred seventy-five".